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R. TANNER.

PROPELLER. APPLICATION mm MAR. 13. 1 915.

PatentdAug. 22,1916.

JZ l Z I Z4 3 5 1 Z ZZ Inventor Attorneys if ..7k///Z67 ROE TANNER, FATTICA, QHIO.

LROPELLER.

messes.

Specification of Letters Patent. Patented l ning. 22., 191%.

, Application filed March 13, 1915. Serial No. 14,282.

To all whom it may concern:

Be it known that 1, Ron TANNER, a citizen of the United States, residingat Attica, in the county of Seneca and'State of ()hio, have invented anew and useful Propeller, of

. which the following is a specification.

This invention relates to propellers of that type especially designedfor'use in connecmeans for mounting the propeller wherebyit may be heldagainst vibration while rotating at a high speed.

With the foregoing and other objects in view which will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and m the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the invention hereindisclosed, can be made within thescope of what is claimed, without dc parting from the spirit of theinvention.

In the accompanying drawings the preferred form of the invention hasbeen shown.

In said drawings :---Figure 1 is a vertical longitudinal section througha structure embodying the present improvements. Fig. ,2 is a frontelevation of the propeller.

Referring to the figures by characters of reference 1 designatesportions of the air ship to which the present -'improvements areapplied, said portions being provided with hearing rings 2 havinginterior raceways 3 carrying anti-friction balls 4: engaged. by rings 5mounted for rotation in the rings 2. The rings 5 are connected by anysuitable means,'such as strips 6 whereby they will rotate together."Furthermore these rings 5 are connected by spiders 7 to hubs 8 which aresecured in any suitable manner to the drive shaft 9 of the propeller.One of the hubs 8 has a flange 10 to which is secured the hub 11 of thepropeller, this hub being connected by spokes 12 to a circular rim 13."

The spokes may be formed of wire somewhat after the manner of the spokesof ordinary bicycle wheels,

although spaced apart. greater distances. Thus the rim 13 is heldconcentric with the hub 11 and will rotate therew1th. Interposed betweenhub 11 and .rim 13 are segmental blades 14, each blade havlng bearingstuds 15 extending from the outer and inner ends thereof, the outerstuds 15 being mounted within the rim 13 while the inner studs bearwithin the hub 11. Said'inner studs 15 have radial arms 16 to which arepivotally connected actuating rods 17. These rods extend through thespiders 7 and are connected to a flange 18 at one end of a sleeve 19which is featheredon the shaft 9. Said sleeve has an annular groovewithin which is arranged a ring 21, this ring being plvotally engaged bythe forked end 22 of a lever 23. This lever is fulcrumed as at 24 uponthe air ship structure and has oppositely extending arms 25 connected bycables 26 or the 'like to opposed arms of a lever 27. This lever ismounted where it can be easily manipulated by the aviator and anysuitablameans may be provided for locking the lever in any position towhich it may be adjusted. This means is preferably in the form of atoothed segment 28 and a pawl 29. Suitably arranged guide wheels 30 aremounted on the air ship for engaging the cables 26 to hold them inproper positions.

It will be apparent that when the shaft 9 v is driven in the usualmanner the hub 11 and rim 13 will be rotated therewith, carrying theblades 14. Likewise the rings 5 will rotate together Within the rings 2and will operate to prevent the shaft 9 and the propeller from vibrating-during the rotation thereof at a high speed. At any time during suchrotation, the sleeve 19 may be shifted longitudinally so that motionwill be transmitted through the rods 17 to the crank arms 16, thusswinging the blades 14' simultaneously about their axes of rotation,thereby to adjust them an ularly, thus to increase or diminish their eectiveness as propelling mediums. It will be noted that the rings 5project into channels in the inner faces of the rings 2 so that theshaft 9 and the parts carried thereby are thus held against longitudinaldisplacement.

What I claim is i The combination with a structure having spaced bearingrings, and connected rings revoluble withinsaid bearing rings, of asolid drive shaftextending throughthe centers of'said connected ringsand revoluble therewith, a-propeller revoluble with said shaft and theconnected rings and including In testimony that I-claim the foregoing asradial blades movable about individual ramy own, I have hereto aflixedmy signature 'dial axes, a sleeve revoluble with and slidin the presenceof two witnesses.

able upon the shaft, actuating'rods fixedly connected to the sleeve andextending Witnesses: through the connected rings, and connec- EARL R.HART, tions between said rods and the blades. HARRY H. BOYD.

ROE TANNER.

